Apparent Digestibility of Nitrogen and Amino Acids in Protein Feedstuffs by Growing Pigs

Knabe, D. A.; LaRue, D. C.; Gregg, E J; Martı́nez, G.; Tanksley, T. D.

doi:10.2527/jas1989.672441x

Cited by 172 publications

(148 citation statements)

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“…The nutritive value of meat and bone meal is mainly dependent on raw material composition and processing conditions (Just et al 1982, Haugen et al 1985, Batterham et al 1986, Knabe et al 1989, Bruyer et al 1990, Skilton et al 1991. The chemical composition of the MBM sample analyzed in the present study (Table 1)is in agreement with the results reported by others (Just et al 1982, Knabe et al 1989, Bruyer et al 1990). Finnish feed tables (Salo et al 1990) give a somewhat lower fat content (90 g CF/kg DM) for meat and bone meal than that measured in the present experiment.…”

Section: Resultssupporting

confidence: 83%

“…As indicated by several authors (Just et al 1982, Knabe et al 1989, Bruyer et al 1990, Skilton et al 1991, meat and bone meal is not a single product but a variety of different products and, hence, actual nutrient contents and their digestibilities can differ considerably from those given in feed tables. Therefore, reduced performance may result from inappropriate nutrient values being ascribed to the product.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, reduced performance may result from inappropriate nutrient values being ascribed to the product. The digestibility of protein, the amino acid content and their availability, in particular, can vary considerably between different meat and bone meals (Batterham et al 1986,Knabe et al 1989). …”

Section: Introductionmentioning

confidence: 99%

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Nutritive value of meat and bone meal for growing pigs

Partanen

Näsi

1994

AFSci

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Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

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Nutritive value of meat and bone meal for growing pigs

Partanen

Näsi

1994

AFSci

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“…The apparent ileal digestibilities of AA in this study (Table 2) are in the range of values for growing pigs fed diets containing fish meal as the sole source of protein (Knabe et al 1989;Wiseman et al 1991). This suggests that the protein in fish meal is easily digested by weanling pigs.…”

Section: Resultsmentioning

confidence: 63%

“…No diarrhea was Knabe et al (1989) and Wiseman et al (1991). The concentration of calcium and phosphorus in the HCaP diets was approximately twice that in the NCaP diets.…”

Section: Resultsmentioning

confidence: 84%

The effect of formic acid and buffering capacity on the ileal digestibilities of amino acids and bacterial populations and metabolites in the small intestine of weanling pigs fed semipurified fish meal diets

Gabert¹,

Sauer²,

Schmitz³

et al. 1995

Can. J. Anim. Sci.

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R. 1995. The effect of formic acid and buffering capacity on the ileal digestibilities of amino acids and bacterial populations and metabolites in the small intestine of weanling pigs fld semipurified fish meal diets. Can. J. Anim. Sci. 75: 615423. An experiment was carried out to examine the effects of supplementa:tion of formic acid to semipurified diets containing fish meal for weanling pigs with low and high buffering capacity on nutrient digestion and bacterial populations and metabolites in the small intestine. Twelve barrows, weaned at 2l d, were fitted with a simple T-cannula at the distil ileum. The BW of the pigs at weaning and at the conclusion of the experiment were.7.8 and 13.8 kg, respectively. The pigs were fed four corn starch-based fish meal diets according to a two-period change-over design' The diets were fbrmulated to contain lSVo CP. For two of the diets, referred to as NCaP, fish meal was the calcium and phosphorus source. For the remaining two diets, referred to as HCaP, the levels of calcium and phosphorus were doubled (compared with the NCap diets) by the addition of calcium carbonate and dicalcium phosphate. The diets were supplemented with (+NCaP and +HCaP) or wit|out (-NCaP and -HCaP) l7o (wt|wt) formic acid. The buffering capacity of the HCaP diets increased (P < 0.05) when the levels of calcium and phosphorus were doubled. The pH of the diets were; 6.25, 4.46,6.13 and 4.59 for the -NCaP' +NCaP, -HCaP and +HCaP diets, respectively. Supplementation of formic acid to diets with low and high buffering capacity did not affect (P > 0.05) the apparent ileal digestibilities of AA. The pH, ammonia and VFA concenfiations, bacterial populations in ileal digesta and the inciderrce of diarrhea were also not affected (P > 0.05). Therefore, the supplementation of l7o (wt/wt) formic acid to corn starch-based fish meal diets with low and high buffering capacity for weanling pigs (7.8-13.8 kg) does not affect nutrient digestibilities and bacterial populations in the small intestine.

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Diurnal Variation in the Composition of Ileal Digesta and the Ileal Digestibilities of Nutrients in Growing Pigs

1997

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Diurnal variation in the chemical composition of digesta and its effect on nutrient digestibilities of diets varying in dietary fibre content was examined in pigs fitted with a PVTC‐cannula at the terminal ileum. The pigs were fed three times a day (08:00, 16:00 and 24:00 h). A barley control diet and four barley‐based diets containing two levels (100 or 200 g kg‐1 diet) of alfalfa meal or white clover meal and Cr2O3 as an indigestible marker were fed according to a 5×5 Latin square design. In each experimental period, digesta were collected for 1 h every third hour on each of two separate sampling days, covering in total a 24 h period. The concentration of dry matter (DM), crude protein (CP), ash and chromium (Cr) in the ileal digesta varied in relation to time of feeding. However, the patterns were similar after all three meals (08:00, 16:00 and 24:00 h) and independent of diet. The maximum DM, CP and ash contents were reached 4–5 h post‐feeding. The highest (P < 0·05) DM concentration was found in the ileal digesta of pigs fed the barley control diet. The DM concentration decreased (P < 0·05) as the inclusion level of alfalfa meal and white clover meal was increased. The lowest DM concentration was found for the highest inclusion level of alfalfa meal. The ileal digestibilities of both organic matter and CP were lower 1–2 h post‐feeding compared with those recorded 3–5 h later, indicating that the less digestible components of a diet have shorter transit times. The pooled ileal digestibilities of organic matter and CP from the three 8 h periods (08:00–16:00 h, 16:00–24:00 h, 24:00–08:00 h) did not differ (P < 0·05) from each other. Therefore, the estimate of digestibility can be based on digesta samples collected from any interval between two consecutive meals. However, care must be taken to obtain representative samples of digesta between meals. © 1997 SCI.

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Apparent Digestibility of Nitrogen and Amino Acids in Protein Feedstuffs by Growing Pigs

Cited by 172 publications

References 0 publications

Nutritive value of meat and bone meal for growing pigs

Nutritive value of meat and bone meal for growing pigs

The effect of formic acid and buffering capacity on the ileal digestibilities of amino acids and bacterial populations and metabolites in the small intestine of weanling pigs fed semipurified fish meal diets

Diurnal Variation in the Composition of Ileal Digesta and the Ileal Digestibilities of Nutrients in Growing Pigs

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